4g mobile comm

8/6/2019 4G Mobile Comm

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OVERVIEWOVERVIEW

IntroductionIntroduction

Development OfMobile CommunicationDevelopment OfMobile Communication

Internet SpeedsInternet Speeds

Features And ArchitectureOf

4G TechnologyFeatures And ArchitectureOf

4G Technology Multimode User TerminalsMultimode User Terminals

4G Applications4G Applications

Quality OfService ChallengesQuality OfService Challenges

LimitationsOf

4GLimitationsOf

4G ConclusionsConclusions

ReferencesReferences


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IntroductionIntroduction

What will 4G be like?What will 4G be like?

According to plans of the InternationalAccording to plans of the International

Telecommunication Union, it will provide 100Telecommunication Union, it will provide 100Mbps data rates when in motion and 1GbpsMbps data rates when in motion and 1Gbps

when stationary.when stationary.

It will support mobile phones, o

fcourse, and

It will support mobile phones, o

fcourse, andalso mobile broadband Internet andalso mobile broadband Internet and

multimedia services.multimedia services.


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One of the terms used to describe 4G isOne of the terms used to describe 4G isMAGICMAGIC

Mobile multimedia, AnytimMobile multimedia, Anytimee anywhere, Globalanywhere, Globalmobility support, Integrated wireless solution, andmobility support, Integrated wireless solution, and

Customized personal serviceCustomized personal service

It will support mobile phones, ofcourse, and alsoIt will support mobile phones, ofcourse, and also

mobile broadband Internet and multimedia services.mobile broadband Internet and multimedia services.

Even mobile HDTV is a possibilityEven mobile HDTV is a possibility

The 4G systems not only will support the nextThe 4G systems not only will support the next

generation of

mobile service, but also will support thegeneration of

mobile service, but also will support thefixed wireless networks.fixed wireless networks.


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Development OfMobile CommunicationDevelopment OfMobile Communication

Thefirst radiotelephone service was introduced in the US atThefirst radiotelephone service was introduced in the US atthe end of the 1940sthe end of the 1940s

First generation:First generation:

Digitization of the control linkDigitization of the control link

AMPS (Advance mobile phone system)AMPS (Advance mobile phone system)

Best on FDMA technologyBest on FDMA technology

Second generation:Second generation:

Digitized not only the control link but also the voice signalDigitized not only the control link but also the voice signal Better quality and higher capacity at lower cost to consumers.Better quality and higher capacity at lower cost to consumers.

GSM was the first commercially operated digital cellularGSM was the first commercially operated digital cellularsystem based on TDMA.system based on TDMA.


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Third generation:Third generation:

The first 3G network was deployed in Japan in 2001The first 3G network was deployed in Japan in 2001

Faster communications services, including voice, faxFaster communications services, including voice, faxand Interneand Interne

Supports 144 Kbps bandwidth, with high speedSupports 144 Kbps bandwidth, with high speedmovementmovement

Fourth generationFourth generation

Support interactive multimedia services,Support interactive multimedia services,teleconferencing, wireless Internet, etc.teleconferencing, wireless Internet, etc.

Wider bandwidths, higher bit rates.Wider bandwidths, higher bit rates.

Global mobility and service portability.Global mobility and service portability.

Low cost.Low cost.

Scalability ofmobile networksScalability ofmobile networks


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Internet SpeedsInternet Speeds

The theoretical speed of3G can be up toThe theoretical speed of3G can be up to

2 Mbps, i.e., approximately 200 times2 Mbps, i.e., approximately 200 times

faster than previous 2G networks.faster than previous 2G networks.

It is anticipated that 4G speeds could beIt is anticipated that 4G speeds could be

as high as 100 Mbps.as high as 100 Mbps.


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The graph represents what has been the typicalThe graph represents what has been the typical

progression ofwireless communications.progression ofwireless communications.


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Features And Architecture Of 4GFeatures And Architecture Of 4G

Tech

nologyT

ech

nology Focus is on the aspect that multiple networks are ableFocus is on the aspect that multiple networks are able

to function in such a way that interfaces areto function in such a way that interfaces aretransparent to users and services.transparent to users and services.

One would be looking for universal access and ultraOne would be looking for universal access and ultraconnectivity, which could be enabled by:connectivity, which could be enabled by:

Wireless networks and with wire line networks.Wireless networks and with wire line networks.

Emergence ofa true IP over the air technology.Emergence ofa true IP over the air technology.

Highly efficient use ofwireless spectrum andHighly efficient use ofwireless spectrum andresources.resources.

Flexible and adaptive systems and networks.Flexible and adaptive systems and networks.


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Keys of 4G infrastructuresKeys of 4G infrastructures

Accessing information anywhere, anytime.Accessing information anywhere, anytime.

Will have broader bandwidth, higher data rate andWill have broader bandwidth, higher data rate and

smoother and quicker handoff.smoother and quicker handoff.

Personalized service will be provided by the newPersonalized service will be provided by the new

generation network.generation network.

4G systems also provide facilities for integrated4G systems also provide facilities for integrated

services. Users can use multiple services from anyservices. Users can use multiple services from anyservice provider at the same time.service provider at the same time.


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To enable the integration ofvarious current systemsTo enable the integration ofvarious current systems

to 4G withfeatures mentioned above, we have toto 4G withfeatures mentioned above, we have toface a number ofchallenges.face a number ofchallenges.

MULTIMODEUSERTERMINALSMULTIMODEUSERTERMINALS

The most promising way of implementingThe most promising way of implementingmultimode user terminals is to adopt the softwaremultimode user terminals is to adopt the softwareradio approachradio approach

In order to use large variety ofservices and wirelessIn order to use large variety ofservices and wireless

networks in 4G systems, multimode user terminalsnetworks in 4G systems, multimode user terminalsare essentialare essential


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Figure.:An ideal software radio receiverFigure.:An ideal software radio receiver


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PERSONALMOBILITY:PERSONALMOBILITY:

Personal mobility concentrates on the movement ofPersonal mobility concentrates on the movement ofusers instead ofusers terminals, andusers instead ofusers terminals, and

Involves the provision of personal communicationsInvolves the provision of personal communications

and personalized operating environmentsand personalized operating environments

TERMINALMOBILITY:TERMINALMOBILITY:

In order to provide wireless services at any time andIn order to provide wireless services at any time and

anywhere, terminal mobility is a must in 4Ganywhere, terminal mobility is a must in 4G

infrastructuresinfrastructures

Terminal mobility allows mobile client to roamTerminal mobility allows mobile client to roam

across boundaries ofwireless networks.across boundaries ofwireless networks.


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ThereThere areare twotwo mainmain issuesissues inin terminalterminal mobilitymobility::

L

ocationL

ocation managementmanagement ::TheThe systemsystem trackstracks andand locateslocates aa mobilemobile terminalterminalforfor possiblepossible connectionconnection..

LocationLocation managementmanagement involvesinvolves handlinghandling allall thethe

informationinformation aboutabout thethe roamingroaming terminals,terminals, suchsuch asasauthenticationauthentication information,information, andand QualityQuality ofof ServiceService(QoS)(QoS) capabilitiescapabilities..

HandoffHandoff managementmanagement::

FormsForms thethe majormajorfeaturefeature ofofaa mobilemobile networknetwork..ItIt isis thethe processprocess ofof switchingswitching aa useruser fromfrom oneone cellcell

toto anotheranother whilewhile aa callcall isis inin progressprogress.. HandoffsHandoffs areareveryvery complexcomplex proceduresprocedures


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4GApplications4GApplications

Advanced applications for 4G systems isAdvanced applications for 4G systems is

location based services.location based services.

TelegeoprocessingTelegeoprocessing

4G location applications would be based on4G location applications would be based on

visualized, virtual navigation schemes.visualized, virtual navigation schemes.

Virtual navigationVirtual navigation

TeleTele--medicinemedicine CrisisCrisis--management applicationsmanagement applications


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QualityQuality ofofServiceService (QOS)(QOS) refersrefers toto thethe measuremeasure ofof thetheperformanceperformance forfor aa systemsystem reflectingreflecting itsits transmissiontransmissionqualityquality andand serviceservice availabilityavailability

44GG isis expectedexpected toto havehave atat leastleast aa reliabilityreliability ofof9999..9999%% MajorMajor hurdleshurdles toto overcomeovercome inin 44GG includeinclude::

VaryingVarying raterate channelchannel characteristicscharacteristics

BandwidthBandwidth allocationsallocations

FaultFault tolerancetolerance levelslevels

HandoffHandoff supportsupport amongamong heterogeneousheterogeneous wirelesswirelessnetworksnetworks

Quality OfService ChallengesQuality OfService Challenges


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Limitations of 4GLimitations of 4G

Major limitation is operating areaMajor limitation is operating area

Ifmeasures are not taken now to correct perceptionIfmeasures are not taken now to correct perception

issues, when 3G and later 4G services are deployed,issues, when 3G and later 4G services are deployed,there may be a great deal ofdisappointmentthere may be a great deal ofdisappointment

associated with the deployment of the technologyassociated with the deployment of the technology

Another limitation is costAnother limitation is cost


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ConclusionConclusion

Projected 4G systems offer this promise ofa standardProjected 4G systems offer this promise ofa standard

that can be embraced worldwide through its keythat can be embraced worldwide through its key

concept of integration.concept of integration.

The future ofmobile communication is FAMOUSThe future ofmobile communication is FAMOUS--Future Advanced Mobile Universal Systems.Future Advanced Mobile Universal Systems.

Basically speaking.Basically speaking.

4G is an evolution to move beyond the limitations4G is an evolution to move beyond the limitations

and problems of3G.and problems of3G.

The speeds of4G can theoretically be promised up toThe speeds of4G can theoretically be promised up to

200 Mbps.200 Mbps.


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ReferencesReferences

[1]. B.G.Evans and K. Baughan, Visions of4G ,[1]. B.G.Evans and K. Baughan, Visions of4G ,Electronics and communication engineering journal,Electronics and communication engineering journal,dec.2002.dec.2002.

[2] J.M Pereira, fourth generation:11[2] J.M Pereira, fourth generation:11thth ieeeieee

int.symp.personal, indoor mobile radioint.symp.personal, indoor mobile radiocommunications.communications.

[3][3] http://users.ece.gatech.edu/~jxie/4G/http://users.ece.gatech.edu/~jxie/4G/

[4.]http://voicendata.ciol.com/content/columns/fromcell[4.]http://voicendata.ciol.com/content/columns/fromcell

/101010301.asp/101010301.asp[5.]http://voicendata.ciol.com/content/columns/fromcell[5.]http://voicendata.ciol.com/content/columns/fromcell

/201010301.asp/201010301.asp


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ANY QUERIES ?ANY QUERIES ?


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THANK YOUTHANK YOU

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